The indomitable Madeline and her 11 friends live at a school run by Miss Clavel in an old house in Paris. She is very good at getting into trouble, but she's also fantastic in solving problems as well, and her school-mistress Miss Clavel is not too approving of her. The biggest problem comes up when Lord Covington decides to sell Madeline's school.

When a tape containing confidential tape is handed to an American human rights activist, it's becomes his death warrant. After the man being assassinated in Belfast, it's remain for his police detective - girlfriend to uncover the truth.